#include <bits/stdc++.h>
using namespace std;
int main(){
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	int N; cin >> N;
	int U[200010], V[200010];
	vector<int> E[200010];
	for(int i = 0; i < N-1; i++){
		cin >> U[i] >> V[i]; U[i] --; V[i] --;
		E[U[i]].push_back(V[i]);
		E[V[i]].push_back(U[i]);
	}
	long long ans[5] = {};
	ans[1] = N-1;
	for(int i = 0; i < N; i++){
		long long a = E[i].size(); 
		ans[2] += a * (a-1) / 2;
	}
	for(int i = 0; i < N-1; i++){
		long long a = E[U[i]].size();
		long long b = E[V[i]].size(); 
		ans[3] += (a-1) * (b-1);		
	}
	cout << ans[1] + ans[2] + ans[3] << "\n";
}